Ancient Toolkit (image) American Association for the Advancement of Science Share Print E-Mail Caption Assemblage C: Hand axe pre-form. For more information, please see figure S5 in the Supporting Online Material, and for Additional Assemblage C material, please see Figure 2 in the manuscript. Credit Image © Science/AAAS Usage Restrictions May be used only with permission. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.